Twice, i.e. frequently, as Job 33:14, both immediately, as at Sinai, and by his holy prophets from time to time. That power belongeth unto God; that power is God's prerogative; and consequently all creatures, either against or without him, are poor impotent things, to which no man can trust without certain disappointment, and God alone is fit to be trusted.
Related Commentaries of Psalms 62:11
Psalms 62:11
11 God hath spoken once; twice have I heard this; that powerd belongeth unto God.